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Báo cáo hóa học: " Research Article Impact of LQI-Based Routing Metrics on the Performance of a One-to-One Routing Protocol for IEEE 802.15.4 Multihop Networks"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Impact of LQI-Based Routing Metrics on the Performance of a One-to-One Routing Protocol for IEEE 802.15.4 Multihop Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 205407 20 pages doi 10.1155 2010 205407 Research Article Impact of LQI-Based Routing Metrics on the Performance of a One-to-One Routing Protocol for IEEE 802.15.4 Multihop Networks Carles Gomez 1 Antoni Boix 2 and Josep Paradells3 1Escola Politecnica Superior de Castelldefels Universitat Polit ecnica de Catalunya UPC C Esteve Terradas 7 08860 Castelldefels Spain 2 Wireless Networks Group WNG Eundació i2cat C Gran Capita 2-4 Edifici Nexus I 2a Planta Despatx 203 08034 Barcelona Spain 3Escola Tecnica Superior d Enginyeria de Telecomunicació de Barcelona Universitat Polit ecnica de Catalunya UPC C Jordi Girona 1-3 08034 Barcelona Spain Correspondence should be addressed to Carles Gomez carles.gomez.entel@gmail.com Received 13 February 2010 Revised 16 June 2010 Accepted 26 July 2010 Academic Editor Dan Wang Copyright 2010 Carles Gomez et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. The quality of an IEEE 802.15.4 link can be estimated on the basis of the Link Quality Indication LQI which is a parameter offered by the IEEE 802.15.4 physical layer. The LQI has been recommended by organizations such as the ZigBee Alliance and the IETF as an input to routing metrics for IEEE 802.15.4 multihop networks. As these networks evolve one-to-one communications gain relevance in many application areas. In this paper we present an in-depth experimental study on the impact of LQI-based routing metrics on the performance of a one-to-one routing protocol for IEEE 802.15.4 multihop networks. We conducted our experiments in a 60-node testbed. Experiments show the spectrum of performance results that using or not the LQI may yield. Results also highlight the importance of the additive or multiplicative nature of